The KJ Mk1 is the great gun for reliability, quality, performance, and practicality. Beautiful and realistic, this very powerful non-blowback pistol optimal for skirmishing. Construction: This is the latest version of the Mk.1 so it has the metal hop up.Solidly built with all metal internals encased in a heavy duty ABS plastic frame the Mk.1 is a very sturdy and reliable sidearm.Metal parts include a full size removable magazine, rear sights, and trigger. A large plume of gas discharges from the barrel with each shot. The magazine holds 16 rounds.

Velocities range from 370-398 fps as tested by our Tech department.

The KJ Work MK 1 is one of our lowest priced gas non-blowback pistols. An excellent value considering its 390 fps velocity, metal magazine and working safety. Other metal parts include inner barrel, magazine catch and trigger. An ideal combination of reliability, durability, and cost effectiveness for department training needs and are the standard target and training pistols of the U.S. Armed Forces.

Things I liked:Powerful, fairly accurate, inexpensive, adjustable hop-up, cheap to shoot using propaneThings I would have changed:give it a little more weight to make it feel more realistic. More room in the trigger guard.What others should know:Not much room in the trigger guard. If you have large fingers or are wearing gloves you can't get your finger in the trigger guard. This may be because it is a replica of a Ruger and they want to be true to the original. Once your finger is on the trigger, it wasn't a problem making successive shots.

Things I liked:Decent replica of the Ruger MK I pistol. The weight and feel of the pistol is good in hand. So far, I have shot about 300 rounds of .20 at 15 feet and have been able to obtain consistent 1.5 inch groups. This is going to be a good winter garage project. My goal is to shrink the group to 1 inch. I like to target shoot in groups of 5 and except for the stray flier, the pistol groups well. The trigger pull is long but smooth. I would not recommend this pistol for rapid fire shooting but for single shot target practice, it's a blast. Things I would have changed:Would like to see either a fiber optic or three dot sight system. That's just to help my old eyes. What others should know:Nice pistol for indoor 5 meter target practice.